客户端认证支持

客户端凭证

使用 client_secret_basic 进行认证

开箱即用地支持使用 HTTP Basic 进行客户端认证，无需额外定制。默认实现由 DefaultOAuth2TokenRequestHeadersConverter 提供。

给定以下 OAuth 2.0 客户端注册的 Spring Boot 属性

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-secret: client-secret
            client-authentication-method: client_secret_basic
            authorization-grant-type: authorization_code
            ...

以下示例展示了如何配置 DefaultAuthorizationCodeTokenResponseClient 来禁用客户端凭证的 URL 编码

  • Java

  • Kotlin

DefaultOAuth2TokenRequestHeadersConverter<OAuth2AuthorizationCodeGrantRequest> headersConverter =
		new DefaultOAuth2TokenRequestHeadersConverter<>();
headersConverter.setEncodeClientCredentials(false);

OAuth2AuthorizationCodeGrantRequestEntityConverter requestEntityConverter =
		new OAuth2AuthorizationCodeGrantRequestEntityConverter();
requestEntityConverter.setHeadersConverter(headersConverter);

DefaultAuthorizationCodeTokenResponseClient tokenResponseClient =
		new DefaultAuthorizationCodeTokenResponseClient();
tokenResponseClient.setRequestEntityConverter(requestEntityConverter);
val headersConverter = DefaultOAuth2TokenRequestHeadersConverter<OAuth2AuthorizationCodeGrantRequest>()
headersConverter.setEncodeClientCredentials(false)

val requestEntityConverter = OAuth2AuthorizationCodeGrantRequestEntityConverter()
requestEntityConverter.setHeadersConverter(headersConverter)

val tokenResponseClient = DefaultAuthorizationCodeTokenResponseClient()
tokenResponseClient.setRequestEntityConverter(requestEntityConverter)

使用 client_secret_post 进行认证

开箱即用地支持将客户端凭证包含在请求体中的客户端认证，无需额外定制。

以下 OAuth 2.0 客户端注册的 Spring Boot 属性展示了该配置

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-secret: client-secret
            client-authentication-method: client_secret_post
            authorization-grant-type: authorization_code
            ...

JWT Bearer

请参考 JSON Web Token (JWT) Profile for OAuth 2.0 Client Authentication and Authorization Grants 文档，了解有关 JWT Bearer 客户端认证的更多详细信息。

JWT Bearer 客户端认证的默认实现是 NimbusJwtClientAuthenticationParametersConverter，它是一个 Converter，通过在 client_assertion 参数中添加签名 JSON Web Token (JWS) 来定制令牌请求参数。

用于签名 JWS 的 java.security.PrivateKey 或 javax.crypto.SecretKey 由与 NimbusJwtClientAuthenticationParametersConverter 相关联的 com.nimbusds.jose.jwk.JWK 解析器提供。

使用 private_key_jwt 进行认证

给定以下 OAuth 2.0 客户端注册的 Spring Boot 属性

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: okta-client-id
            client-authentication-method: private_key_jwt
            authorization-grant-type: authorization_code
            ...

以下示例展示了如何配置 DefaultAuthorizationCodeTokenResponseClient

  • Java

  • Kotlin

Function<ClientRegistration, JWK> jwkResolver = (clientRegistration) -> {
	if (clientRegistration.getClientAuthenticationMethod().equals(ClientAuthenticationMethod.PRIVATE_KEY_JWT)) {
		// Assuming RSA key type
		RSAPublicKey publicKey = ...
		RSAPrivateKey privateKey = ...
		return new RSAKey.Builder(publicKey)
				.privateKey(privateKey)
				.keyID(UUID.randomUUID().toString())
				.build();
	}
	return null;
};

OAuth2AuthorizationCodeGrantRequestEntityConverter requestEntityConverter =
		new OAuth2AuthorizationCodeGrantRequestEntityConverter();
requestEntityConverter.addParametersConverter(
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver));

DefaultAuthorizationCodeTokenResponseClient tokenResponseClient =
		new DefaultAuthorizationCodeTokenResponseClient();
tokenResponseClient.setRequestEntityConverter(requestEntityConverter);
val jwkResolver: Function<ClientRegistration, JWK> =
    Function<ClientRegistration, JWK> { clientRegistration ->
        if (clientRegistration.clientAuthenticationMethod.equals(ClientAuthenticationMethod.PRIVATE_KEY_JWT)) {
            // Assuming RSA key type
            var publicKey: RSAPublicKey
            var privateKey: RSAPrivateKey
            RSAKey.Builder(publicKey) = //...
                .privateKey(privateKey) = //...
                .keyID(UUID.randomUUID().toString())
                .build()
        }
        null
    }

val requestEntityConverter = OAuth2AuthorizationCodeGrantRequestEntityConverter()
requestEntityConverter.addParametersConverter(
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
)

val tokenResponseClient = DefaultAuthorizationCodeTokenResponseClient()
tokenResponseClient.setRequestEntityConverter(requestEntityConverter)

使用 client_secret_jwt 进行认证

给定以下 OAuth 2.0 客户端注册的 Spring Boot 属性

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: okta-client-id
            client-secret: okta-client-secret
            client-authentication-method: client_secret_jwt
            authorization-grant-type: client_credentials
            ...

以下示例展示了如何配置 DefaultClientCredentialsTokenResponseClient

  • Java

  • Kotlin

Function<ClientRegistration, JWK> jwkResolver = (clientRegistration) -> {
	if (clientRegistration.getClientAuthenticationMethod().equals(ClientAuthenticationMethod.CLIENT_SECRET_JWT)) {
		SecretKeySpec secretKey = new SecretKeySpec(
				clientRegistration.getClientSecret().getBytes(StandardCharsets.UTF_8),
				"HmacSHA256");
		return new OctetSequenceKey.Builder(secretKey)
				.keyID(UUID.randomUUID().toString())
				.build();
	}
	return null;
};

OAuth2ClientCredentialsGrantRequestEntityConverter requestEntityConverter =
		new OAuth2ClientCredentialsGrantRequestEntityConverter();
requestEntityConverter.addParametersConverter(
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver));

DefaultClientCredentialsTokenResponseClient tokenResponseClient =
		new DefaultClientCredentialsTokenResponseClient();
tokenResponseClient.setRequestEntityConverter(requestEntityConverter);
val jwkResolver = Function<ClientRegistration, JWK?> { clientRegistration: ClientRegistration ->
    if (clientRegistration.clientAuthenticationMethod == ClientAuthenticationMethod.CLIENT_SECRET_JWT) {
        val secretKey = SecretKeySpec(
            clientRegistration.clientSecret.toByteArray(StandardCharsets.UTF_8),
            "HmacSHA256"
        )
        OctetSequenceKey.Builder(secretKey)
            .keyID(UUID.randomUUID().toString())
            .build()
    }
    null
}

val requestEntityConverter = OAuth2ClientCredentialsGrantRequestEntityConverter()
requestEntityConverter.addParametersConverter(
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
)

val tokenResponseClient = DefaultClientCredentialsTokenResponseClient()
tokenResponseClient.setRequestEntityConverter(requestEntityConverter)

定制 JWT 断言

由 NimbusJwtClientAuthenticationParametersConverter 生成的 JWT 默认包含 iss、sub、aud、jti、iat 和 exp 声明。可以通过提供一个 Consumer<NimbusJwtClientAuthenticationParametersConverter.JwtClientAuthenticationContext<T>> 给 setJwtClientAssertionCustomizer() 来定制头部和/或声明。以下示例展示了如何定制 JWT 的声明

  • Java

  • Kotlin

Function<ClientRegistration, JWK> jwkResolver = ...

NimbusJwtClientAuthenticationParametersConverter<OAuth2ClientCredentialsGrantRequest> converter =
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver);
converter.setJwtClientAssertionCustomizer((context) -> {
	context.getHeaders().header("custom-header", "header-value");
	context.getClaims().claim("custom-claim", "claim-value");
});
val jwkResolver = ...

val converter: NimbusJwtClientAuthenticationParametersConverter<OAuth2ClientCredentialsGrantRequest> =
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
converter.setJwtClientAssertionCustomizer { context ->
    context.headers.header("custom-header", "header-value")
    context.claims.claim("custom-claim", "claim-value")
}

公共客户端认证

开箱即用地支持公共客户端认证，无需额外定制。

以下 OAuth 2.0 客户端注册的 Spring Boot 属性展示了该配置

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-authentication-method: none
            authorization-grant-type: authorization_code
            ...

使用 Proof Key for Code Exchange (PKCE) 支持公共客户端。当 client-authentication-method 设置为 "none" (ClientAuthenticationMethod.NONE) 时，PKCE 将自动使用。
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